Ok, as I'm driving at highway speeds, there's a vibration from somewhere. I had the front end aligned so i know it's not that. about 3 or 4 months ago my driveshaft puked out a U-joint. when it did it messed up the slip yoke on the lower end where the U-joint is. I bought a used one and the guy told me I'd probably have to have the shaft balanced since they weren't mated from the factory. Is this true and could this be causing the vibration?

i just recently had to replace a u-joint in my 91 xtra cab cause it had ceased up. I noticed that the vibration only happened during acceleration and not when i depressed the clutch. Si when i was changing them out i noticed that all the joints were a little worn and had rust powder around them all so i replaced all 3 of them with duralast u-joints with grease zerts and now its as quite as can be but you have to make sure that when u reinstall the drive line that it was the same way when it came out or the vibration will continue

if you have the time or just like tinkering you can remove the drive shaft and turn it to see if the vibration gets any better or worse but in the end you are probually gonna have to break down and get it balanced

i just recently had to replace a u-joint in my 91 xtra cab cause it had ceased up. I noticed that the vibration only happened during acceleration and not when i depressed the clutch. Si when i was changing them out i noticed that all the joints were a little worn and had rust powder around them all so i replaced all 3 of them with duralast u-joints with grease zerts and now its as quite as can be but you have to make sure that when u reinstall the drive line that it was the same way when it came out or the vibration will continue

Hey there D/B,
I have to replace a bad U joint as well, how did you choose from so many? I'm confused as to which U joint to choose. I ran a search thru Napa auto parts on-line, and there were a bunch to choose from ranging from $10.- $30... My Ranger is a 87 x-tra cab, with a tree piece
drive-line. I use it for a put-put around town only.
AL